Metal-sawing machine



(No Model.) 'a sheets-fsm 1. Y

Y J. vR. J. BALZ.

METAL SAWING MACHINE.

Patented May 14, '1895.

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(No Model.) 3 sheetssheet 2. J. su R.}J. BALZ..

METAL SAWING MACHINE.

N0 539,246 Patented May 14, 1895.

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INVENTORS'.'

. (No Model.)

l 3 Sheets--Sheet 3. .J. 8v R. J. BALZ. METAL SAWING MAGHINE.

No. 539,246. Patented May 14, 1895.

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' ATTORNEY m: Nonms PETER: co., Pnoaumo., wnsnmmcn. n. c.

UNrrED STATES PATENT OFFICE.

JoHN BALZ AND ROBERT'JBALZ, or sYRAoUsE', NEW YORK.

- SPECIFICATION forming part of Letters Patent No. 539,246, date May 14,1895.

Application rieti october 3,1894.

To @ZZ whom it mar/concern:

Be it known that we, JOHN BALZ and ROB- ERT J. BALZ, of Syracuse, in thecounty of Onondaga, in the State of New York, have invented new anduseful Improvements in Metal-Sawing Machines, of which the follow- Iing, taken in connection with the accom pau ying drawings, is'a full,clear, and exactdescription.

This invention relates to the class of sawing machines which have areciprocatingsaw termed drag-saw and designed more specially for sawingmetal.

The object of the invention Vis to produce a machine which shall besimple in construc tion, efficient in its operation, easily controlledand whichshall automatically cease to operate when the material is sawedthrough.

The invention consists in providing a suitable supporting frame (whichin this case is of the form of a table) with asuitable pair of shaftsupports, two shafts axially in line, one in each support, a bracketmounted gloosely on the inner ends of vsaid shafts, a pulley looselymounted on one of said shafts, a reciprocating saw-carrying framesliding on said bracket and suitable connections between said parts; andthe invention also consists in theimproved details of lthe constructionof the machine as hereinafter described and shown. in the annexeddrawings, in which- Y Figure .1. is a front view of the improvedmachine. Fig. 2 is an end view of the same. Fig. 3 is a plan view. Fig.4 is a sectional view taken on line l l in' Fig'. 3. Fig.,5 is a viewtaken on line 2 2 in same gure. Fig'.

I6 is a view taken on-*line 3 3, also in Fig. 3;

and Fig. 7 is a View taken on line 4 4 in Fig.

1, showing the construction of the saw-carrying frame and saw-guidehereinafter described. A y p Referring by letter to the several parts ofthe improved machine: -A-.is a post or pillar of a table having the capor table -B- on its top and provided with the base -B- by which'it issustained upright, said parts forming the mainQsupporting frame of ,themachine. The cap of said frame has mounted upon it the usualpillow-blocks -gg in which are journaled respectively the shafts =-D-Dwhichv are axially in line and are Serial No. 524,777. (No model.)

made by a double crank. Upon `said shafts p is loosely mounted a bracketC- having a rod d extending therefrom over the line of sawing and uponsaid rod slides the reciprocating saw-carrying frame --ct-v having twodownwardly extendingI arms -a/-a-- in which the saw -sis held, Saidbracket is formed of two upwardly converging arms -b-b-- forming twobraces terminating at their junction with a box -bin which is heldtheaforesaid rod -df.

The saw-carrying frame -ais formed with a cylindrical portion a in itsmain portion for the reception of the rod -d, guides -c-cextendingrespectivelyfrom the upper and lower edges thereof to said cylindricalportion through which the sawguide -bpasses and is screw-threaded in itsupper portion by which it is secured to the rod d-. v A

In the upper portion of the upper guide cwhich is preferably V shapedslides a which the screw threaded portion -fof the sawguide passes and anut'-fon the upper end of said saw guide and bearing on said 'blockholds the same in the V shaped portion of the gt1ide.-c. as shown inFig. 7 of the drawings, and the upper portion of said sawcarrying frameis Vsplit longitudinally and is provided with screws or bolts -fto takeup the wear on the aforesaid cylindrical portion thereof. The lower endof said saw-guidel is provided with a verticalslot or notch hmthroughwhich the saw slides as clearly shown in Fig. 7 of the drawings. l

To thekmain frame is secured a vise which may be` of any well known formto hold'the material to be sawed, and it is therefore not necessary todescribe .thevsame ,A It is also 'un, necessary to describe the mannerinwwhich the saw is held in the saw-frame as this is also a well knownconstruction and any suitable means rnay be employed for the purpose.

Pivoted to opposite sides of the saw-carrying frame -a and extendingrearward to the aforesaid cranks CV-CZ- are'two parwhich bars and cranksreciprocating motion lil is transmitted from the shafts to said frame,said cranks and bars being firmly held together by means of a block-dmbetween said bars and crank-pin -tZ- passing through all of saidparts as clearly shown in Figs. 2 and 3 ot' the drawings.

-E represents the driving pulley whichv is loosely mounted on the shaft.D- and has aiixed to it a clutchmember -z--adapted to engage acompanion clutch-member -z secured to said shaft. The throwing of saidpulley and its clutch-member into and passes through said guide o and bygravity lies on the collar -jand bears against the hub proper when thepulley with its clutchmember is out of engagement with the shaftclutchmember and'bypu'shing the leverrea'rward, the pulley-clutch `member isbrought in contact with the shaft-clutch member 4and the machine isinits operative position. The lever is forced back t0 its normalposition, but lying on the shaft and `against said collar to hold thepulley in said position by a spring ,-oseated in the guide or slot 0^-and bearing against said lever as clearly shown in Fig. 3 of thedrawings. By raising the lever when the pulley is in said position theplate nwith its cam WJ-thereon is tilted toward the hub -jof the pulleyand 'the aforesaid lug -7con the hub striking the cam throws the pulleyaway from the shaft clutch `member thereby stopping the operation of themachine,`and the lever is forced back as aforesaid to its Vnormalposition and again by its gravity lies on the collar and the pulley isfree to turn on the shaft -D-.

Thestopping of the machine automatically when the materialis sawedthrough is performed by the following mechanism: lTo one of the arms-bof the bracket u#C--is secured a toothed segment -'h engaging avertically movable ratchetbar-7thaving a downward extension tt-extendingthrough a slot in the top of the main fframe on the lower portion ofwhich are secured Weights `g"-`to regulate the pressure of thesaw on thematerial to be `sawed, and an adjustable stop g'- thereon bearingagainst the under side'of the top -Be-of the maintfraineto'limit thedownward movement ofthe sawLc-arrying Pivoted to the aforesaid pil-iwith its rear end under the aforesaid camplate -n-' and secured to theaforesaid segment is a bar -'Z- having an adjusting pin or screw -mbywhich it bears on the oppositeend of said lever, and when thesawcarrying frame -ahas reached a certain point in its downward movement(regulated by the stop -g'-) the bar pushes said end down and the rearend` bearing on the under side of the plate `n with its cam -nasaforesaid, thereby tilting the same toward the hub--jand said cam in thepath of the lug -kon the hub and the lever-r is thereby raised from theshaft by reason of its being pivoted to said cam-plate as aforesaid andby said lug striking the cam, the pulley -E with its clutch-'membere-f-is thrown away from the shaft-clutch member -iand the collar 7"'- onthe hub of said pulley is per mitted to slide under the lever as shownin Fig. 3 of the drawings. By raising the sawcarrying frame whichthereby moves the bracket -C-, the segment -7z and the bar -Z- securedto said segment, the plate -n is relieved from pressure of the lever -Zand the weighted lever r pivoted to said plate by its gravity `fallsinto its normal `position lying on the collar jand thereby tilts saidplate "with its cam away from the hub of the pulley-E andout of the pathof thelug -7r, and the pulley with its clutchmember is free to again bethrown toward the s'haftclutch member to again start the machine.

To any suitable portion of the main frame is secured a suitablesupport-o-`on which is a roller -h-' forming a bearing for the ratchet-bar -iand bears against the side thereof opposite the segment. On the upperend of said bar is another stop -1 which may be of any suitable form andis adapted to come in contact'with the roller -L- to limit the upwardmovement of the sawcarry ing frame more clearly shown `in Fig. l ofthedrawings.

What we claim ist l. In ametal sawing machine, the combination with themain supporting frame, of the driving shaft mounted thereon, a pulley onsaid shaft, an upright bracket loosely mounted on said shaft, a rodextending from said bracket a reciprocating saw-carrying frame slidingon said rod, a saw-guide extending through said frame and secured tosaid rod and suitable connections between the shaft and saw-carryingframe as set forth and shown.

2. In a metalsawing machine, the combination with the'main supportingframe, of supports thereon, two Shafts axially in line, one journaled ineach support, a pulley on one shaft, a movable' upright bracket lloosely mounted on the inner end portions of said shafts, Va 'rodextending from said bracket a reciprocating saw-carrying frame sliding`on said rod, a saw-guide extendingthrongh said IOO frame and secured tothe rod and suitable connectiousbetween said shafts and frame as setforth and shown.

' 3. In a metal sawing machine, the combination with the main supportingframe, of a pair of supports thereon, two shafts axially in line,

-one journaled in each support, a pulley on one shaft, an uprightbracket loosely mounted on` the inner end portions of said shafts, a rodextending from said bracket, a reciprocating saw-carrying frame slidingon said rod, a sawguide passing through said saw-frame and secured tothe rod, and suitable connections between saidv shafts and saw-carryingframe as set forth and shown.

4. In a metal sawing machine, the combination with the main supportingframe, of a pair of supports thereon, two shafts axially in line,`

one journaled in each support, an upright bracket loosely mounted on theinner end portions of said shafts, a rod extending from said bracket, areciprocating saw-carrying frame a saw-guide extending verticallythrough the' saw-carrying frame and secured to the aforesaid rod insideof the frame as described and shown.

5. In ametal sawing machine, the combination with the main-supportingframe, ofa driving-shaft, a pulley loosely mounted thereon, asuitablysupported saw-carrying frame, suitable con nection between said frameand shaft, a manually operated lever to throw the pulley in operativeposition with the shaft and means to automatically throw the pulleyoutof said position as set forth. v

6. In a metal sawing machine, the combination of two shafts axially inline suitably supported on the main frame, a pair of upwardly convergingarms loosely mounted thereon, a box substantially as shown formedattheir junction, a rod extending from said box, a reciprocatingsaw-carrying frame sliding on said rod, and suitable connections betweensaid frame and shafts, as shown.

7. In a metal sawing machine, the combination with the main supportingframe, of supports thereon, a pairot' upwardly converging arms looselymounted thereon, a box substantially as shown formed at their junction,a rod secured in said box and extending therefrom over .the line ofsawing, a reciprocating sawcarrying frame sliding on said rod, asawguide secured to said rod, and suitable mechanism to operate saidsaw-carryin g frame substantially as set forth and shown.

8. In a metal sawing machine, the combination with the main supportingframe, of a pair of supports, two shafts axially in line, one journaled`in each support, ay pulley on one shaft, a pair of upwardlyconvergingarmslon the inner end portions of said shafts, a rod extending fromtheir junction, a reciprocatingsaw-carrying frame sliding on said `rodand suitable connections between said frame and'shafts k'substantiallyas described and shown.

9.V I-n combination with the main support-y ing frame, two shaftsmounted thereon axially in line with each other, a pulley on one shaft,a bracket mounted loosely on the inner end portions of said shafts, arod extending from said bracket, a reciprocating saw-carrying ner endsof said shafts and pitmen extending from oppotite sides of thesaid frameto said cranks as described and shown.

10. The combination of the driving shafts -D--D-, the bracket -Clooselyv mounted thereon and having a rod -dextend# ing therefrom, thereciprocating saw-carrying frame -ttsliding on said rod, a guide -cformed in the lower portion of said frame, a corresponding guide -cinits upper portion having the V shaped portion l-eand correspondinglyshaped block -esliding therein, a saw-guide -bscrew-threaded in itsupper portion extending through the sawframe and through said lowerguide and through the aforesaid rod -cZ- and secured to the same, thencethrough the upper guide -c-'and through the aforesaid block -e-, and anut f on its upper end as shown for thepurpose set forth.

11. The combination with the main supporting frame, of two shaftsaxially in line supported thereon, a pulley on one shaft, an upwardlyextending bracket mounted loosely on the inner end portions of saidshafts, a rod extending from said bracket, a reciprocating saw-carryingframe sliding on said rod, suitable connections between said shafts andframe, a segment secured to said bracket and mechanism connected to saidsegment to coun.- terweight the saw-carrying frame and limit thedownward movement thereof as set forth and shown.

- l2. The combination with the main supportingframe, of supportsthereon, two shafts axially in line journaled in said supports, a pulleyon one shaft, a pair of upwardly converging arms extending from theinner end portions of said shafts, a box substantially as described andshown, formed at their junction,

a rod extending from said junction, a reciprocating saw-carrying framesliding on said rod, suitable connections between saidframe and shafts,a toothed segment secured to one of said arms and a vertical ratchet-baren`- gaging saidsegment to counter weight-the saw-carrying frame andlimit -the downward l movementth'ereofas set forth and shown.l

18.v The combination with the main supportley on one shaft, a pair ofu'p wardly con verging arms extending from the inner end portions ofsaid shafts, a box substantially as described IIO and shown formed attheir junction, a rod secured therein and extending therefrom over theline of sawing, a reciprocating saw-carrying frame sliding on said rod,cranks connecting the inner ends of said shafts, pitmen extending fromopposite sides of said frame to said cranks, and secured thereat, asaw-guide extending through said frame independently thereof andsecured, to the aforesaid rod, a toothed segment secured to one of said4arms, a vertically movable ratchet-bar engaging said segment, a rollerforming a bearing for said bar suitably supported on the main frame,weights on said bar a stopon its lower portion to limit the upward'movement thereof, and a stop at itstop portion to limit thedownward movement for the purpose set forth.

14. The combination with the main supporting frame, of a drivingshaftsuitably mounted thereon, a bracket loosely mounted on said shaftand apulley loosely mounted thereon,a reciprocating saw-carrying framesliding on said bracket, suitable mechanism connecting said frame andshaft, and means to automatically throw said pulley out of gear for thepurpose set forth.

15. The combination with the main supporting frame, of a pair ofsupports, two shafts axially in line, one i'n each support, a pulley onone shaft, a pairof upwardly converging arms mounted loosely on theinner end portions of said shafts, a rod extending fromtheir junction, areciprocating saw-carrying frame sliding on said rod, a saw-guideextending through said frame, independently thereof and secured to saidrod, cranks connecting the inner ends of said shafts, pitrnen connectingsaid saw-frame and cranks, and mechanism to automatically throw saidpulley out of gear as described and shown for the purpose set forth.

16. The combination with the-main supporting frame, of two shaftsaxially in line suitably supported thereon, a movable upwardly extendingbracket substantially as described and shown loosely mounted on theinner end portions of said shafts, a rod extending therefrom, areciprocating saw-carrying frame sliding on said rod, asaw-gudeextending through said frameindependently thereof and secured to saidrod, a pair of cranks connecting the inner ends of the shafts, pitmenextending from opposite sides of said frame to the cranks and securedthereat, a toothed segment secured to or formed on said bracket, asuitably supported vertically movable ratchetbar engaging said segment,an extension on the lower end of said bar, having weights thereon, stopsrespectively on the lower end of said extension and upper portion of`the ratchet-bar to limit the upward and downward movement thereof, apulley mounted loosely on one of said shafts and havinga clutchmemberthereon, a plate havinga cam thereon pivoted to one of the shaftsupports, and capable of `being tilted toward and'from the hub of thepulley, and normally away therefrom, a companion clutch-member securedto the shaft, and adapted to engage the aforesaid clutch-member, a leverpivoted to the same shaft support with one endlbearing on the under sideof saidcam-plate, a bar secured to the aforesaid segment bearing on theoppositeend of said lever to tilt said-cam-plate toward the hub of thepulley,and a lugon said hub adapted to strike said cam to throw thepulley with its clutch-memberoutof engagement with the shaft`clutch-member to automatically stop the operation of themachine asdescribed and Shown.

17. The combination of the .driving shaft suitably mounted on the mainsupporting frame and having a clutch-member secured thereto, a pulleyloosely mounted thereon having a companion clutch-member, a platepivoted below said shaft and to its support having a cam formed thereon,a weighted lever pivoted to said cam-plate and holding the cam by itsgravity normally away from, the hub of said pulley, -a `collar formed onsaid hub and of `smaller `diameter than the `hub and of :greaterdiameter than the driving shaft, said lever being adapted to reston thecollar and against the Vend of the hub when the clutch-members aredisengaged, and to rest on the shaft and bearing in the same manner`against said collar when the said clutch-memberslare in engagement asshown for thepurpose set forth.

18. The-combination of the drivingshaft having a `clutch-member securedthereon and its support, a pulley loosely `mounted on said shaft andhaving a companion clutch-member secured to its lhubanda lug on theperiphery of said hub, a plate pivoted `to said support and havinga camformed thereon,.and a guide therein a weighted lever-pivoted to thelower portion of said plate andV by gravity holding the cam away fromthe aforesaid lug on the hub, and movable sidewse in said guide tothrowthe pulley with its clutch-member into engagement with the shaftclutch-member to operate the machine, a spring in said guide to throwsaid lever back to its normal position, said lever being adapted .totilt the camplate toward the hub of the pulley in its rising movement byreason of its being pivoted as aforesaid, and the lug on said hub tostrike the cam to throw the pulley and its clutchmember away from theshaft clutchmember as shown for the purpose set forth.

19. In ametal sawing machine, the combination of the driving shaftsuitably supported on the main frame, a pulley thereon, a bracketsubstantially as described and shown loosely mounted on said" shaft, andsupporting the saw-carrying frame and adapted to swing thereon and`carry therewith said frame, a

toothed segment secured to or formed on said "bracket, a plate pivotedto the shaft support and having a cam formed thereon and` aguidetherein, a lever pivoted to the lower portion of said plate holding thecam by :its gravity normally away from thehub of thepulley, a

spring in said guide to-hold said ,leverl in its normal position, alever pivoted` to the shaft ward extension on said bar, an adjustable'stop on said extension bearing against the under side of the top of themain frame, said extension extending through said top by means of a slottherein, a stop on the upper portion of said bar, and weights on thelower portion of extension as shown for the purpose set forth.

20. The combination of the support -g, driving shaft -D- journaledtherein, a

plate -'li-V pivoted'to said support having a cam -n formed thereon, apulley -E loosely mounted on said shaft',l a lug -Za'- formed on 4 thehub -jof said pulley, a

guide -oformed in said plate, a Weighted lever -rpivoted to vsaid plateand passing through said guide, a spring .-oseated in said guide andbearing against the lever,a collar JV-I formed on the hub, aclutch-member -z'' secured to said hub and a oompanion clutch-member-lsecured to said shaft as shown for the purpose set forth.

In testimony whereof We yhave hereunto signed our names this2lst day ofSeptember,'

JOHN BALZ. F.. s] ROBERT J. BALZ. L. s] Witnesses:

C. L. BENDIXON, `J.J. LAAss.

